Automatic temperature and humidity regulation – Ventilator type – Electrically actuated
Patent
1991-11-14
1994-11-15
Ford, John K.
Automatic temperature and humidity regulation
Ventilator type
Electrically actuated
236 78B, 236 78D, 236DIG9, 417 32, 318473, 318471, 388910, 388916, 388934, F24F 702, F24F 7007, F24F 11053
Patent
active
053640268
ABSTRACT:
The residential structure ventilating apparatus disclosed herein employs a variable speed exhaust fan. The speed is responsive to a sensor which detects air temperature at the exhaust port. The fan is energized when the sensed air temperature rises above a first preselectable temperature and the external environmental air is cooler that the air at the exhaust port. The fan speed is increased progressively from about one-half full speed at the preselected turn on temperature to full speed at a predetermined higher temperature. The fan is turned off when the exhaust port temperature falls below a second preselected temperature, lower than the first preselected temperature or when the external environmental temperature rises above the inside temperature, the fan speed being essentially constant between the first and second preselected temperatures.
REFERENCES:
patent: 3829010 (1974-08-01), Jones
patent: 3862718 (1975-01-01), Butler
patent: 4244193 (1981-01-01), Haakenson
patent: 4251026 (1981-02-01), Siegel et al.
patent: 4394957 (1983-07-01), Newton, III
patent: 5049801 (1991-09-01), Potter
Control Resources, Inc.
Ford John K.
Pahl Jr. Henry D.
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